I want to change the original single line brake system on my 64 El Camino to a two line system. Any ideas as to what I can use. I'm just now adding a power brake booster but it still has the single brake line to the proportioning valve. I'd really like to have a second line as back up. Can I just get a different master cylinder and proportioning valve? If so, what.
do you have drum brakes all around ? Or front disc/ rear drum? You will need the correct master cyl. Drum/Drum or Disc/drum and a correct proportioning valve drum disc/drum.
I believe the dual MCs started in 68. One of those should bolt right into your car, as well as the lines, valve etc.
The brakes are all original, 9 inch drums all around.
check out right stuff detailing or classic performance products. they will have all that you need.
You will want to buy front brake lines for a 67 Chevelle
If you use a booster, master, and the distribution valve from a 67, EVERYTHING will bolt right in.
I did this on my 66
72 Chevelle Booster/Master-----Must be a disc/drum master
67 Chevelle distribution block------this mounts on the frame.
72 rubber brake hose brackets-----your current drum brake hose brackets won't work.
67 Chevelle front brake lines----I chose the lines for a big block car----big block and small block use different passenger lines.
67 Chevelle power brake lines----booster to distribution.
You might want to add a proportioning valve after the master.
I did not have to----the brakes on my 66 Elky are working just fine---just a bit sensitive.
If you wist to avoid the distribution block on the frame (not easy to find and a bit pricey), you can get a prop valve and brackets to either mount in the stock 67 location (hard to get to and service) or brackets to mount it on the master/booster assy.
If you mount the prop valve near the master/booster, you will most likely have to get a set of brake lines for a disc brake kit----different than the stock routing.
Yep, I literally just bled the brakes on my 65 Skylark this morning with 72 Olds Cutless (any A body, Skylark, Chevelle, Tempest, Cutless) Disc brakes bolted on, complete spindle. Then complete brake master with brackets and hard lines going to the proportioning valve all off the same 72 Cutless.
On the same note, if all you are after is eliminating the single reservoir for safety reasons, the other angle is to simply rebuild it all and drive it keeping it well maintained.
My daily driver has a single reservoir master cyl and I don't think a thing of it. I was all replaced new, lines and all because it had been parked a long time. But With it all new, just like the millions of cars that drove the roads for years like this. If you let a system go, if you don't do your brakes properly or of course there is the chance of some freak accident something flying up and damaging a brake line or hose, but other than that, they work fine.
But you could pickup the 67 dual master cyl and bolt it right on, running your drum brakes that work fine. Run new hard lines down and putting a junction block for the rear line to go into then for a new one to come down to it. On the front same thing, it could be done in an afternoon. And a real parts store is going to have all this stuff in stock. The new brake lines that have a dark greenish finish on them bend real easy without kinking, they are super easy to work with if you don't have a bender.
You simply bend them over something kinda round with your old one to compare it to. It is VERY easy, and they come in many different lengths so you will likely not have to do any double flares at the end or anything. If there isn't an exact length you can often make one with the combination of a couple of the pre-made ones with a coupler in the middle. Or if it's a little too long you can make a loop in it or just make a few extra bends to take up a little length, it will all work exactly the same.
Honestly, you could do this in an afternoon it is no big deal.
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